package com.atguigu.gulimall.seckill.scheduled;

import com.atguigu.gulimall.seckill.service.SeckillService;
import lombok.extern.slf4j.Slf4j;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

/**
 * @author 孤风雪影
 * @date 2021/2/19 0:16
 * 秒杀商品的定时上架:
 * 每天晚上3点 上架最近三天需要秒杀的商品
 */

@Slf4j
@Service
public class SeckillSkuScheduled {

    @Autowired
    private SeckillService seckillService;

    @Autowired
    private RedissonClient redissonClient;

    private final String upload_lock = "seckill:upload:lock";

    /**
     * Job：每隔三秒，上架最近三天需要上架的秒杀信息
     */
    @Scheduled(cron = "*/3 * * * * ?")
    public void uploadSeckillSkuLatest3Days() {
        //1.重复上架无需处理
        log.info("上架秒杀的商品信息");
        // 分布式锁 锁的业务执行完成,状态已经更新,释放锁后,其他人获取到最新的状态
        RLock lock = redissonClient.getLock(upload_lock);
        lock.lock(10, TimeUnit.SECONDS);
        try {
            this.seckillService.uploadSeckillSkuLatest3Days();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            lock.unlock();
        }
    }

}
